Research on Fatigue Curves for Pre-corroded Aircraft Structures  

飞机结构预腐蚀疲劳曲线研究(英文)

作　　者：王忠波 刘文珽 贺小帆 

机构地区：[1]School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

出　　处：《Chinese Journal of Aeronautics》2004年第4期220-223,共4页中国航空学报（英文版）

基　　金：AeronauticalPre researchFoundation

摘　　要：To quantitatively evaluate the effects of corrosion during grounding onfatigue life of aircraft structures, a new power equation is proposed using two-variable linearregression method. That the slope is a constant and the logarithmic intercept is a linear functionof pre-corrosion time makes this equation advantageous: it has a simple form, its parameters haveunambiguous technical and geometrical meanings, and it facilitates engineering applications.Three-parameter equations after pre-corrosion are obtained from back-calculation of fatigue limits,which have been successfully used to predict safe life of aircraft structures in corrosiveenvironment.To quantitatively evaluate the effects of corrosion during grounding onfatigue life of aircraft structures, a new power equation is proposed using two-variable linearregression method. That the slope is a constant and the logarithmic intercept is a linear functionof pre-corrosion time makes this equation advantageous: it has a simple form, its parameters haveunambiguous technical and geometrical meanings, and it facilitates engineering applications.Three-parameter equations after pre-corrosion are obtained from back-calculation of fatigue limits,which have been successfully used to predict safe life of aircraft structures in corrosiveenvironment.

关 键 词：fatigue life PRE-CORROSION fatigue curve regression analysis lifeprediction CORROSION 

分 类 号：V215[航空宇航科学与技术—航空宇航推进理论与工程]